About this 3D model

This is a fan holder for a 50mm x 50mm x 11mm fan.It was inspired by this thing: http://www.thingiverse.com/thing:8183I made it because I could not find the right current setting for my stepper driver to keep the motors cool, and not lose steps.I've added a butchered heatsink to improve the cooling capacity.Now my X stepper stays cool, and doesn't mis a step! As an added bonus, there's a hole for the wires.The Y heatsink doesn't need a fan because it's bigger.It's held in place by a suitably edited large paperclip.